How to make strawberry frosting

Place strawberries in a blender; puree until smooth.

Transfer strawberry puree to a saucepan over medium heat; bring to a boil, stirring often, until puree is reduced by at least half, about 20 minutes. Remove from heat and cool completely.

Beat butter with an electric mixer in a bowl until light and fluffy. Then beat 1 cup confectioners' sugar into butter until just blended.

Beat 2 tablespoons strawberry puree and vanilla extract into butter mixture until just blended. Repeat with 1 cup confectioners' sugar, followed by 2 tablespoons strawberry puree two more times.

Beat last 1/2 cup confectioners' sugar into mixture until just blended.